Excavation Shoring Design

We are experienced in design of following types of earth shoring systems (and many more):

• Soldier Pile & Lagging Catilevered, Wale Braced, and Tied-back walls

• Sheet Pile Catilevered, Wale Braced, and Tied-back Walls

• Pre-Engineered Manufactured Shoring System (Slide Rail, Trench Shield, Hydraulic Trench Jacks, etc.)

• Corrugated Metal Pipe (CMP) Shafts

• OSHA Compliant Sloped Excavation and Slope Stability Analysis

• Secant Pile Walls

• Railroad Compliant Shoring

• Timber Shoring

Pre-engineered manufactured shoring systems (e.g. trench shields, slide rail, and hydraulic jacks) are an efficient and economical method of shoring when used in the right conditions. These off-the-shelf shoring systems are often accompanied by a tabulated data with an OSHA Soil Type depth ratings table and an allowable pressure rating. The stand-alone tabulated data suffice when shoring is installed in basic and simple excavations, however more complicated conditions that are outside the limits of the tabulated data require a site-specific shoring design prepared by a licensed PE. Here are some conditions that are outside the limit of the typical tabulated data, however, keep in mind these are just a few of many scenarios:

• Excavations over 20 ft in depth

• Shoring within influence of adjacent structures, railroad tracks, or heavy construction equipment

• Shoring next to new and existing slopes

• Conditions where strict deflection criteria must be met

• Standing groundwater behind shoring

• Poor soil conditions where excavations are susceptible to base instability effects such as “heave” and “soil piping”

At CMK Engineering, we can prepare site-specific shoring designs using pre-manufactured shoring systems in various conditions. We have a large library of data and CAD drawings for shield, slide rail, and hydraulic shoring components to ensure your plans are as accurate as possible.

We have experience designing shoring that meet strict and specific requirements of many government and private agencies. Below are some common agencies that have more specific shoring design requirements, but do not hesitate to contact us if your agency isn’t on this list. Chances are, we have come across them.

• New York (DOB, DDC, DEP, DOT)

• Los Angeles (LABOE, Caltrans)

• Army Corps of Engineers

• Railroad (UPRR, BNSF, CSX, Metro)

We also provide a number of other underground engineering services such as follows:

• Underpinning

• Thrust block and Jacking Frame Design

• Temporary Utility Support

• Trench road plate covers